Discovery of the Nearly Zero Flux Between Two Parallel Conductors in Planar Transformers

Li, Mingxiao; Ouyang, Ziwei; Andersen, Michael A. E.

doi:10.1109/tpel.2021.3093171

Cited by 14 publications

(2 citation statements)

References 28 publications

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“…Moreover, many of these approaches are based on Dowell's method and only hold for cases with one-dimensional (1-D) distributions of current [2]. [16] presents a linear application of Maxwell's laws, but is again limited in its applicability (1-D distributions of current, only two parallel conductors, and secondary currents being in phase).…”

Section: Introductionmentioning

confidence: 99%

Modeling Current Distribution Within Conductors and Between Parallel Conductors in High-Frequency Magnetics

Solomentsev

Hanson

2022

IEEE Open J. Power Electron.

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In both planar and wire-wound transformers, large copper cross-sections and parallel windings are often used to increase conduction area and decrease copper loss. However, at high frequency, current is not guaranteed to spread out maximally over the cross-section of a single conductor or to split evenly between parallel conductors. Finite element analysis (FEA) and SPICE-based systems have been used to analyze current distribution within magnetic components, but these methods are computationally intensive. In this paper, we show that Maxwell's equations, in the high frequency limit, yield a set of linear algebraic equations that are rapidly solvable to yield both the current and magnetic field distribution and hence can be used to predict loss and leakage inductance. Due to its simplicity, this method is easily applied to cases with a one-dimensional or two-dimensional distribution of current. We show that predicted results match both FEA simulations and experimental measurements very accurately for a variety of cases. This paper is accompanied by several software implementations of the method. This method can be used to rapidly analyze high frequency current distribution in transformers and can easily be integrated into numerical optimization algorithms.

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Section: Introductionmentioning

confidence: 99%

Modeling Current Distribution Within Conductors and Between Parallel Conductors in High-Frequency Magnetics

Solomentsev

Hanson

2022

IEEE Open J. Power Electron.

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“…Many researchers presented various studies that aim to integrate the micro-transformer in the micro-converter. [9][10] presented the design and modeling of an octagonal planar inductor and transformer for integration into a converter. They performed an electromagnetic and thermal simulation.…”

mentioning

confidence: 99%

Flyback Micro-Converter Design with an Integrated Octagonal Micro-Transformer for DC-DC Conversion

Derkaoui,

Benhadda

2023

IJEER

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The work presented in this paper concerns the design of an integrated flyback DC-DC micro-converter operating at high frequencies. The flyback converter consists of only one transformer. The integrated micro-transformer in the flyback micro-converter is composed of two planar stacked coils with spiral octagonal geometry. Basing on Mohan’s method, the geometrical parameters are evaluated. The different parasitic effects created in the stacked layers are grouped perfectly in the equivalent electrical circuit that summarizes all parasitic effects. The integrated micro-transformer is characterized by scattering parameters extraction. The thermal and electromagnetic effects generated in the micro-transformer are illustrated, using finite elements method on COMSOL Multiphysics 5.3 software. To validate the electrical model, the simulation of the flyback micro-converter containing the equivalent electrical circuit of the micro-transformer is established, using PSIM 9.0 software. The gap between the coils is considered as an integrated MIM capacitor created at high frequencies leads to create a low pass micro-filter with the secondary coil.

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Analysis of a Non-overlapping Interleaved Planar Transformer Winding Structure with Reduced Parasitic Effects

Venugopal

Robert

2022

Iran J Sci Technol Trans Electr Eng

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Discovery of the Nearly Zero Flux Between Two Parallel Conductors in Planar Transformers

Cited by 14 publications

References 28 publications

Modeling Current Distribution Within Conductors and Between Parallel Conductors in High-Frequency Magnetics

Modeling Current Distribution Within Conductors and Between Parallel Conductors in High-Frequency Magnetics

Flyback Micro-Converter Design with an Integrated Octagonal Micro-Transformer for DC-DC Conversion

Analysis of a Non-overlapping Interleaved Planar Transformer Winding Structure with Reduced Parasitic Effects

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